public bool IsValid(IEntityWithRedundancyCheck entity)
{
var calculatedHash = this.CalculateHashForEntity(entity);
var currentHash = entity.CRC ?? new byte[0];
return(calculatedHash.SequenceEqual(currentHash));
}
public byte[] CalculateHashForEntity(IEntityWithRedundancyCheck entity)
{
var seed = new StringBuilder();
var entityType = entity.GetType();
foreach (PropertyDescriptor propertyDescriptor in TypeDescriptor.GetProperties(entityType))
{
var fieldMarkedForRc = propertyDescriptor.Attributes
.OfType <FieldMarkedForRedundancyAttribute>()
.FirstOrDefault();
if (fieldMarkedForRc != null)
{
//TODO: Verificar el orden del armado de la semilla
var propertyValueSerialized = Convert.ToString(propertyDescriptor.GetValue(entity) ?? string.Empty);
seed.Append(propertyValueSerialized);
}
}
return(_hash.CreateHash(seed.ToString()));
}
private static Type GetEntityType(IEntityWithRedundancyCheck entityWithCRC)
{
return(System.Data.Entity.Core.Objects.ObjectContext.GetObjectType(entityWithCRC.GetType()));
}
